ltc3455euf-trpbf Linear Technology Corporation, ltc3455euf-trpbf Datasheet - Page 28

• Manufacturer Part Number: ltc3455euf-trpbf
• Description: Dual Dc/dc Converter With Usb Power Manager And Li-ion Battery Charger
• Manufacturer: Linear Technology Corporation

RELATED PARTS
PART NUMBER
LT1616
LTC1879
LTC3405/LTC3405A
LTC3406/LTC3406B
LTC3407
LTC3412
LTC3414
LTC3440/LTC3441
LTC3455
TYPICAL APPLICATIO
28
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
WALL 5V
REMOVE THESE
COMPONENTS IF
WALL ADAPTER
IS NOT USED
DESCRIPTION
500mA (I
DC/DC Converter
1.2A (I
DC/DC Converter
300mA (I
DC/DC Converter
600mA (I
DC/DC Converter
Dual 600mA (I
DC/DC Converter
2.5A (I
DC/DC Converter
4A (I
DC/DC Converter
600mA/1A (I
DC/DC Converter
USB 5V
4.7µF
4.7µF
●
3.3V TO 4.2V
FAX: [phone]
C7
CELL Li-ION
OUT
C6
1Ω
1Ω
OUT
OUT
SINGLE
), 4MHz, Synchronous Step-Down
OUT
OUT
OUT
), 550kHz, Synchronous Step-Down
), 4MHz, Synchronous Step-Down
OUT
), 1.4MHz, High Efficiency Step-Down
), 1.5MHz, Synchronous Step-Down
), 1.5MHz, Synchronous Step-Down
OUT
+
), 2MHz/1MHz, Synchronous Buck-Boost
), 1.5MHz, Synchronous Step-Down
3.32k
1.24k
5.6V
U
D1
V
1.8V
LBO
●
BAT
CONTROLLER
10µF
2.49M
806k
www.linear.com
C5
C8, 0.1µF
USB
4.7µF
C4
1M
1k
2.49k
10
11
17
16
8
6
5
4
3
2
9
C1 TO C8: X5R OR X7R CERAMIC
L1, L2: TOKO DB318C
D1: ON SEMI MBRM110E
ALL RESISTORS 1%
USB
SUSPEND
USBHP
V
CHRG
WALLFB
TIMER
PROG
V
AO
AI
MAX
BAT
LTC3455
COMMENTS
90% Efficiency, V
I
95% Efficiency, V
I
95% Efficiency, V
I
96% Efficiency, V
I
96% Efficiency, V
I
95% Efficiency, V
I
95% Efficiency, V
I
95% Efficiency, V
I
SD
SD
SD
SD
SD
SD
SD
SD
PWRON
PBSTAT
MODE
HSON
<1µA, ThinSOT
<1µA, TSSOP16
<1µA, ThinSOT
<1µA, ThinSOT
<1µA, MS10E
<1µA, TSSOP16E
<1µA, TSSOP16E
<1µA, MS/DFN
SW2
SW1
GND
HSO
ON2
RST
3455 TA03
FB2
FB1
HSI
ON
21
15
19
22
20
23
24
14
13
12
18
7
1
25
L2, 4.7µH
L1, 4.7µH
1M
IN
IN
IN
IN
IN
IN
IN
IN
10pF
10pF
: 3.6V to 25V, V
: 2.7V to 10V, V
: 2.7V to 6V, V
: 2.5V to 5.5V, V
: 2.5V to 5.5V, V
: 2.5V to 5.5V, V
: 2.25V to 5.5V, V
: 2.5V to 5.5V, V
1M
ON/OFF
µC
© LINEAR TECHNOLOGY CORPORATION 2006
C3
1µF
1.8V
3.3V, HS
249k
80.6k
100k
80.6k
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
LT 0606 REV B • PRINTED IN USA
= 0.8V, I
C2
10µF
C1
10µF
= 1.25V, I
= 0.8V, I
3.3V
0.5A
1.8V
0.4A
= 0.6V, I
= 0.6V, I
= 0.8V, I
= 2.5V, I
= 0.8V, I
Q
Q
= 20µA,
Q
Q
Q
Q
Q
= 15µA,
Q
= 20µA,
= 40µA,
= 60µA,
= 25µA/50µA,
= 1.9mA,
= 64µA,
3455fb